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. 2008 Dec 9;9:71. doi: 10.1186/1745-6215-9-71

Figure 2.

Figure 2

Changes in concentration of H2S. Comparison of mean H2S, hydrogen sulfide; Olfactory threshold levels, H2S > 1.5 ng/10 ml values between rinsing with ClO2 (n = 15) and rinsing without ClO2 (n = 15) by Student's t-test. *, p < 0.05; **, p < 0.01.